Noble metal-refractory metal alloys as catalysts and method for

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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75 05AB, 75 05BB, 75172R, 75172E, 2524253, 252460, 252466PT, 252472, 429 40, 429 44, B01J 2100, B01J 2112, B01J 2118, B01J 2340

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041861108

ABSTRACT:
Finely divided noble metal-refractory metal alloys and methods for making them are disclosed. As catalysts these alloys have greater activity than a catalyst of the same unalloyed noble metal and may be advantageously used as electrodes for fuel cells particularly when supported. The method for making supported catalysts involves a simple and inexpensive procedure for converting a supported, finely divided noble metal catalyst to the desired alloy. In a preferred embodiment the process includes intimately contacting the supported noble metal catalyst with a finely divided refractory metal oxide, the metallic component of which is capable of enhancing the activity of the catalyst when alloyed therewith, and then heating to a sufficiently high temperature, preferably in a reducing atmosphere, to reduce the oxide and simultaneously form a finely divided, supported alloy of the noble metal and the metallic component of the oxide.

REFERENCES:
patent: 2384501 (1945-09-01), Streicher
patent: 2406172 (1946-08-01), Smithells
patent: 3085876 (1963-04-01), Alexander et al.
patent: 3340097 (1967-09-01), Hess et al.
patent: 3341936 (1967-09-01), Sanstede et al.
patent: 3414439 (1968-12-01), Adlhart
patent: 3424619 (1969-01-01), Adlhart
patent: 3428490 (1969-02-01), Bravo et al.
patent: 3433680 (1969-03-01), Archer
patent: 3481787 (1969-12-01), Adlhart
patent: 3506494 (1970-04-01), Adlhart
patent: 3962139 (1976-06-01), Van de Moesdijk et al.
patent: 3989515 (1976-11-01), Reiff
patent: 4127468 (1978-11-01), Alfnaar et al.
Platinum Metals Review-vol. 20, No. 3 (1976), pp. 79-85, "The Affinity of Platinum Metals for Refractory Oxides" by Pieter Ott & Christoph J. Raub.
Journal of Catalysis-vol. 25, No. 1, Apr. 1972, pp. 173-176, "Preparation of a Well Dispersed Platinum-Iron Alloy on Carbon" C. H. Bartholomew et al.

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